<template>
  <div
    :class="animate"
    :style="{ height: height, width: width }"
    :id="chartOption.bindingDiv"
    ref="text"
  >
    <div
      :key="key"
      v-swiper:mySwiper="swiperOption"
      :style="{ zIndex: zIndex }"
    >
      <div class="swiper-wrapper">
        <div
          class="swiper-slide"
          v-for="(item, index) in banners"
          :key="index"
          :style="{ height: height, width: width }"
        >
          <img :src="item.value" :style="{ height: height, width: width }" />
        </div>
      </div>
      <div class="swiper-pagination swiper-pagination-bullets"></div>
    </div>
  </div>
</template>

<script>
import echarts from "echarts";
require("echarts/theme/macarons"); // echarts theme
import resize from "@/views/dashboard/mixins/resize";
import { Swiper, SwiperSlide, directive } from "vue-awesome-swiper";
import "swiper/css/swiper.css";
import "../../animate/animate.css";

import { parseQueryString, fIsUrL } from "../../util/urlUtil";
import { chartApiBar ,chartBIanalysis } from "@/api/tool/datav/chartApi";
import { websocketCommand } from "../../util/websocket.js";
const animationDuration = 6000;

export default {
  components: {
    Swiper,
    SwiperSlide
  },
  directives: {
    swiper: directive
  },
  props: {
    className: {
      type: String,
      default: "chart"
    },
    width: {
      type: String,
      default: "100%"
    },
    height: {
      type: String,
      default: "100%"
    },
    chartOption: {
      type: Object
    },
    zIndex: {
      type: Number
    }
  },
  data() {
    return {
      chart: null,
      //dataOption: JSON.parse(JSON.stringify( this.chartOption )),
      key: 1,
      timer: "",
      banners: this.chartOption.staticDataValue,
      swiperOption: {
        //swiper3
        // 分页器配置
        pagination: {
          el: ".swiper-pagination",
          clickable: true,
          type: "bullets",
          hideOnClick: true
        },
        // 设定初始化时slide的索引
        initialSlide: 0,
        //Slides的滑动方向，可设置水平(horizontal)或垂直(vertical)
        direction: "horizontal",
        // 自动切换图配置
        autoplay: {
          delay: 3000,
          stopOnLastSlide: false,
          disableOnInteraction: false
        },
        effect: "slide",
        // 箭头配置
        navigation: {
          nextEl: ".swiper-button-next",
          prevEl: ".swiper-button-prev"
        },
        // 环状轮播
        loop: true,
        loopedSlides: 3,
        loopAdditionalSlides: 0,
        // 一个屏幕展示的数量
        slidesPerView: 1,
        // 间距
        // spaceBetween: 26,
        // 修改swiper自己或子元素时，自动初始化swiper
        observer: true,
        // 修改swiper的父元素时，自动初始化swiper
        observeParents: true
      },
      wsObj: null,
      wsFlag: false,
      wsTimer: "",
      wsValue: null,
      animate: this.className
    };
  },
  watch: {
    width() {},
    height() {},
    chartOption: {
      deep: true,
      handler(newVal) {
        this.setOptions(JSON.parse(JSON.stringify(newVal)));
      }
    },
    "chartOption.timeout": {
      handler() {
        this.chart = null;
        this.initChart();
      }
    },
    "chartOption.dataSourceType": {
      handler(value) {
        //切换数据源重新连接
        if (value !== "websocket") {
          this.wsFlag = false;
          //每次切换数据源恢复原来动画
          this.animate = this.className;
        }
        if (value !== "url") {
          clearTimeout(this.timer);
        } 
      }
    },
    "chartOption.interfaceKey": {
      handler(newValue, oldValue) {
        //初始化不创建连接，改变接口地址重新创建
        if (oldValue !== undefined && oldValue != "") {
          this.wsValue = null;
          this.closeWs();
          this.createWs();
          this.animate = this.className;
        }
      }
    },
    wsFlag: {
      handler(value) {
        if (!value) {
          this.wsValue = null;
          this.closeWs();
        }
      }
    },
    className: {
      handler(value) {
        this.animate = value;
      }
    }
  },
  mounted() {
    this.$nextTick(() => {
      this.initChart();
    });
  },
  beforeDestroy() {
    if (!this.chart) {
      return;
    }
    this.chart = null;
    clearTimeout(this.timer);
    if (this.wsFlag) {
      this.closeWs();
    }
  },
  computed: {},
  methods: {
    initChart() {
      
      //判断是否开启定时器，当是访问url接口时候并且timeout不为0时候开启定时器
      if (this.timer != "") {
        clearTimeout(this.timer);
      }
      if (
        (this.chartOption.dataSourceType == 'url' || this.chartOption.dataSourceType == 'database') &&
        this.chartOption.timeout > 0
      ) {
        let timerTask = () => {
          this.setOptions(JSON.parse(JSON.stringify(this.chartOption)));
          this.timer = setTimeout(() => {
            timerTask();
          }, this.chartOption.timeout);
        };

        timerTask();
      }else{
        this.setOptions(JSON.parse(JSON.stringify(this.chartOption)));
      }
    },
    setOptions: async function(dataOption) {
      //初始化数据
      //如果不是静态数据就调用接口给staticDataValue赋值
      if (dataOption.dataSourceType == "url" || dataOption.isStaticData == false) {
        let paramJson = parseQueryString(dataOption.requestParameters);

        let interfaceURL = dataOption.interfaceURL;

        let result = await chartApiBar(
          dataOption.requestMethod,
          interfaceURL,
          paramJson,
          dataOption.token
        );
        dataOption.staticDataValue = result;
      } else if (dataOption.dataSourceType == "database") {
         if (dataOption.database.executeSql != undefined && dataOption.database.executeSql != '') {
          
          let result = [];
          if(dataOption.database.sqlType == 'custom'){
          
            result = await chartBIanalysis(dataOption.database);
          }
          if (result.code == 200) {
            dataOption.staticDataValue = result.data;
            //console.log(dataOption.staticDataValue);
          } else {
            alert("操作数据库错误");
          }
        }       
      } else if (dataOption.dataSourceType == "websocket") {
        if (
          dataOption.interfaceKey != undefined &&
          dataOption.interfaceKey != ""
        ) {
          if (!this.wsFlag) {
            this.wsFlag = true;
            this.wsValue = null;
            this.createWs();
          }
          if (this.wsValue != null) {
            dataOption.staticDataValue = this.wsValue;
          }
        }
      }
      //数据处理
      if(dataOption.customData != undefined && dataOption.customData != ""){
          
          try {
            dataOption.staticDataValue = (
          
            //里面为要处理的代码块
            eval(dataOption.customData) 
            
            )(
              dataOption.staticDataValue,
              this.$refs.text
            );
          } catch (error) {
            console.log(error)
          }
          
       }
      //交互组件配置
       if(dataOption.interactData != undefined && dataOption.interactData != ""){
          
          try {
            dataOption.staticDataValue = (
          
            //里面为要处理的代码块
            eval(dataOption.interactData) 
            
            )(
              dataOption.staticDataValue,
              this.$refs.text
            );
          } catch (error) {
            console.log(error)
          }
          
       }

      this.banners = dataOption.staticDataValue;

      this.swiperOption.direction = dataOption.direction;
      this.swiperOption.autoplay.delay = parseInt(dataOption.playSpeed);
      this.swiperOption.effect = dataOption.isEffect;
      this.swiperOption.pagination.hideOnClick = dataOption.isPagination;
      this.swiperOption.pagination.type = dataOption.paginationType;

      this.key++;
    },
    //  ws连接成功，后台返回的ws数据
    receiveMsg(e) {
      if (e.action == "chat") {
        // console.log('服务端推送',e);
        this.wsValue = e.result;
        this.setOptions(JSON.parse(JSON.stringify(this.chartOption)));
      }
    },
    // 建立连接、发起ws请求，以心跳方式，向服务端发送数据
    createWs() {
      this.wsObj = new WebSocket(process.env.VUE_APP_WEBSOCKET);
      // 若为对象类型，以回调方式发送
      websocketCommand(
        this.wsObj,
        "create",
        5000,
        this.chartOption.interfaceKey,
        this.sendHeartBeat,
        this.receiveMsg,
        this.reconnectWs,
        this.wsWarning
      );
    },
    // 断网重连，需要处理的逻辑
    reconnectWs() {
      if (this.wsObj) {
        console.log("%c websocket_reconnect", "color:blue");
        this.createWs();
      }
    },
    // 以回调方式向服务端发送(对象类型的)心跳
    sendHeartBeat() {
      if (this.wsTimer != "") {
        clearTimeout(this.wsTimer);
      }

      let wsTimerTask = () => {
        console.log("发送心跳", "ping");
        let obj = { action: "keep", key: this.chartOption.interfaceKey };
        this.wsObj.send(JSON.stringify(obj));
        this.wsTimer = setTimeout(() => {
          wsTimerTask();
        }, parseInt(process.env.VUE_APP_WEBSOCKET_TIMEOUT));
        this.wsWarning();
      };

      wsTimerTask();
    },
    wsWarning() {
      //如果断开连接则显示组件警告动画并清除计数器
      if (this.wsObj.readyState == 3) {
        this.animate = "warning";
        clearTimeout(this.wsTimer);
      }
    },
    closeWs() {
      clearTimeout(this.wsTimer);
      websocketCommand(
        this.wsObj,
        "close",
        5000,
        this.chartOption.interfaceKey,
        this.sendHeartBeat,
        this.receiveMsg,
        this.reconnectWs,
        this.wsWarning
      );
      this.wsObj = null;
    }
  }
};
</script>

<style lang="scss" scoped>
.demo-input-suffix {
  display: flex;
  float: left;
}
</style>
